Reactions of substituted 3,3-diphenyl- and 3,3-dimethyl-1-oxaspiro[3,5]nona-5,8-diene-2,7-diones with nucleophiles
Abstract
The reactions of substituted 3,3-diphenyl-1-oxaspiro[3,5]nona-5,8-diene-2,7-diones with nucleophiles proceed via p-quinone methides as intermediates followed by 1,6-addition of the nucleophile to give diphenyl-(p-hydroxyphenyl)methyl derivatives in good yields.